European health authorities confirm West Nile virus cases span twelve different nations. Data from ECDC shows cases have significantly increased since the year's start.

Italy reports the highest number, with Greece and Spain following in confirmed infections.

Cases also documented in North Macedonia, Romania, France, and neighboring Serbia. The Netherlands detected two infections; several other countries reported a single occurrence.

Ninety-nine distinct regions within Europe have reported confirmed cases so far. This week, new regions joined the list, bringing attention to growing concern.